While not one of the best I've recently seen, this is still a good picture. I think it's strongest part is how it is a fairly original idea. I like how the background is torn up too. I must have seen zombies like this before. There are just so many of them it's hard to keep track. He seems to be a good representation of one as well.
I like the sluggish pose he's in. You seemed to want to have a lot of different parts have rotting flesh. Granted, you can't see much in it, but it's still good to look at. I would never get a Mohawk even if I was dead. I like how he's completely bone on one side.